Opsidius Logo
Drag

Web Application & SaaS

Turn your idea into a working product. From concept to launch, I handle everything.

Entrepreneurs with a SaaS or business app idea? I make it happen. SaaS MVP, custom web app, internal tool. Result: Functional product in 2-3 months.

For who?

This offer is for entrepreneurs who want to concretize a SaaS, business web application or business software idea. Whether you are a project leader with a clear vision or you have simply identified a business need, I accompany you from the definition of the concept to the launch of a functional, viable and evolutive product.

Owner

"We were managing everything with Excel and sticky notes. It was chaos. The custom app centralized everything, and my teams got 10 hours back per week. Priceless."

Owner
Industrial SME • Brittany
Founder

"I had this SaaS idea for 2 years, but no one understood my vision. In 3 months, I had a working product. Today I have 50 paying customers."

Founder
SaaS Startup • London
Co-founder

"Agencies were quoting me €80k and 6 months for my MVP. Opsidius delivered it in 10 weeks for a third of the price, and the code is clean. We can scale without rebuilding."

Co-founder
Tech Startup • Paris
Product Director

"I was looking for someone who gets business, not just code. Damien (Opsidius) helped me prioritize features and define my strategy. My SaaS has been profitable since month 4."

Product Director
Tech Startup • Nantes

What I can do for you

Three types of products depending on your needs.

SaaS MVP

Minimum viable version of your SaaS for quick validation.

  • Functional product in 2-3 months
  • Scalable architecture from the start
  • Integrated subscription management

Custom web application

Complete web application tailored to your internal project or SaaS.

  • Custom interface adapted to your needs
  • Robust and secure backend
  • PWA for mobile use

Internal tool

Business tool for your internal teams, an internal software for your company.

  • Adapted to your specific processes
  • Integration with your existing tools
  • Training and documentation

A good MVP is not 'everything, cheaper'

A complete user journey, basic admin, clean technical foundation, and metrics to know if it works. We cut the rest (V2/V3) and keep a sellable product, not a fragile demo.

Typical MVP deliverables

  • User roles (admin, user, etc.)
  • Core functional flows
  • Basic admin panel
  • Analytics & event tracking
  • Documented V2 roadmap

Concrete Results

What my clients actually gain

For a functional
MVP
2-3
months
Less costs
Vs traditional agency
50
%
Clean and
Maintainable code
100
%
Average time
For a quote
48
h

Transparent prices, no surprises

Pricing

OpsidiusSaaS MVP

Starting from

€5,000
  • Minimum viable version
Book a discovery call
OpsidiusWeb application

Starting from

€15,000
  • Complete custom application
Book a discovery call
OpsidiusComplete solution

Starting from

€30,000
  • Complex architecture
Book a discovery call

Why me?

  • I don't code just to code. I understand your business need and build a product that solves a real problem.
  • Nuxt 3, Vue.js, TypeScript. Clean, maintainable code that scales. No legacy code that will cost you later.
  • No unrealistic promises. I commit to deadlines I can meet. MVP in 2-3 months, that's realistic.
  • I don't just deliver a product and disappear. Training, maintenance, evolution: I'm here for the long haul.

Readytomakeyourideahappen?

Let's discuss your project and see how I can transform your idea into a functional product.